Hydraulic motor.



A. E'. WEINGARTNER.

HYDRAULIC MOTOR.

APPLIOATION FILED 001:.1a,'19 07.

Patented 0011221908.

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A. E. WEINGARTNER.

HYDRAULIC MOTOR.

APPLICATION FILED 001:. 18, 1907.

902,35 1 Patented Oct. 27, 1908.

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A. E. WEINGARTNER.'

HYDBAULIG MOTOR. APPLICATION 211.111) 00118; 1907.

Patented 0011221908.

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ANTON E. WEINGARTNER, OF BETHLEHEM, PENNSYLVANIA.

HYDRAULIC MOTOR.

Specification of Letters Patent.

Patented Oct. 27, 1908.

Application filed. October 18, 1907. Serial No. 398,117.

To all whom it may concern:

Be it known that I, ANTON E. WVEINGART- NER, a citizen of the UnitedStates, residing at Bethlehem, in the county of Northampton and State ofPennsylvania, have invented certain new and useful Improvements inHydraulic Motors; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to hydraulic motors constructed so that they mayalso be operated by steam or compressed air.

It has for its object to provide a simple and inexpensive constructionof double cylinder, double acting motor wherein the motor fluid is fedthrough a single inlet and discharged through a single outlet.

The invention consists in the features of construction and combinationsof parts hereinafter described and specified in the claims.

In the accompanying drawings illustrating the preferred embodiment of myinvention: Figure 1 is a plan view of the engine. Fig. 2 is an enlargedcentral longitudinal section. Fig. 3 is a central vertical cross sectionwhen the pistons are midway of their strokes. Fig. 4 is a cross sectionof the cylinder casting taken on the line w02 of Fig. 2. Fig. 5 is asimilar section on the line y-y of Fig. 2, and Fig. 6 is a cross sectionof said cylinder casting taken through the left hand valve way in Fig.2. 1

Referring more particularly to the drawings, the cylinder castingcontains twin piston cylinders 1 and 2 in which are mounted respectivelythe pistons 3 and 4:. Intermediate of said cylinders said casting isprovided with valve ways 5 and 6, one of which is arranged near each endof said casting. Said valve ways are vertically disposed and open onupper and lower chambers 7 and 8 arranged in the central portion of saidcasting between said cylinders. One of said valve ways (the left handone in Fig. 2) also communicates with the inlet passage 9 which islocated between said upper and lower chambers. The other valve waycommunicates with the outlet passage 10 which is arranged at that end ofthe casting in the same manner that the inlet is at the other end.

The upper chamber 7 communicates with the cylinders 1 and 2 throughports 11 and 12 respectively, arranged at opposite ends of said chamberwhereby the motor fluid from said chamber is fed into opposite ends ofthe two cylinders at the same time. The lower chamber communicates withthe cylinders through ports 13 and 14 also arranged at opposite ends ofsaid chamber and so that at each end of the casting there is a portleading from the upper chamber to one cylinder and a port leading fromthe lower chamber to the other cylinder. The valves 15 and 16 areprovided with grooves or circumferential recesses 15 and 16,respectively, in their outer faces. Said grooves are wide enough tocomprehend or extend across said inlet or outlet passage, as the casemay be, and the opening into either of the chambers 7 or 8.

Between the two valve ways and also intermediate of the two pistoncylinders is arranged a vertical shaft 17 on the upper end of which ismounted a cross beam 18 pivoted to swing in a horizontal plane. On thelower end of said shaft another cross beam 19 is secured. The cylindercasting has a sleeve 20 extending upward around said shaft to a pointsomewhat above the top of said cylinders and valve ways. The valves arere ciprocated by a disk-shaped member 21 having a central perforation 22through which extends the sleeve 20 to which said disk is pivoted at 23whereby the latter is adapted to move in a vertical plane. Said disk isprovided with opposite radial projections 24: and 25, respectively,which are rounded, as shown in Fig. 2, at the points of engagement withnuts 26 adjustably screwed on the valve stems 27 and 28. The radialprojection 2st is extended beyond the rounded portion, as at 29.

The upper cross beam 18 is formed with a laterally extending segment 30on the inner face of which is arranged a ledge 31. The projection 29 onthe disk is adapted to be locked either above or below said ledge 31during each movement or reciprocation of the cross beam 18. There issufficient space at each end of the ledge, however, to permit said diskto be reversed at the end of each of said reciprocations of said crossbeam. A spring-pressed pin or stud 32 mounted vertically in a socket 33formed in said upper cross beam and bearing upon said disk, first on oneside and then on the other side of its pivot as said beam reciprocates,serves to automatically reverse said disk when its projection 29 isreleased from the ledge 31 at the end of each stroke. It will be notedthat with this arrangement, one of the valves will always be up when theother is down. Each of the piston rods 34: and 35 is connected to across head 36 and 37 respectively. Connecting rods 38 and 39 extend fromthe cross head 36 to corresponding ends of the upper and lower crossbeams while other connecting rods 40 and 411 connect the cross head 37with the other ends of said cross beams.

The operation of the motor is briefly as follows: When the various partsare in the positions shown in Figs. 1 and 2, wherein the piston 3 in theforward cylinder 1 is beginning its stroke to the right and the piston4k in the rear cylinder 2 is commencing its stroke to the left, themotor fluid is fed through the inlet 9 and the groove in the valve 15 tothe upper chamber 7 from whence it passes via port 11 to the left handend of the cylinder 1 and via port 12 to the right hand end of thecylinder 2. During this action of the motor when the piston 3 is movingto the right and the piston 1 to the left, the motor fluid in thecylinders ahead of said pistons escapes through the ports 13 and 14 tothe lower chamber 8 and out by way of the groove in the valve 16 to thedischarge 10. Vhen the pistons reach the ends of their strokes in thedirection described, the upper cross beam will have turned until theledge 31' releases the projection 29 of the disk 21 whereupon said diskis automatically re-. versed by the pressure of the stud 32 thereon,said stud having been carried around with said cross beam until it bearsupon the opposite end of said disk from that shown in Figs. 1 and 2. Thereversing of the disk 21 reverses the valves as described whereby on thereturn stroke of the pistons the motor fluid is fed into the lowerchamber 8 and the discharge is effected through the upper chamber, theports 13 and 1 1 acting as inlets and ports 11 and 12 as outlets. Fromthis explanation, it will be readily seen how the successive strokes ofthe pistons are made by using the upper and lower passages and portstherein alternately as inlets and outlets. It will also be noted thatthe piston in one cylinder will run just as well alone when the othercylinder is plugged up.

I claim:

1. In a motor of the character described, a cylinder, a piston in saidcylinder, two valves controlling the supply and exhaust, anintermediately pivoted lever mounted to move in a vertical plane andhaving its ends operatively connected to said valves, a pivoted crossbeam mounted to swing in a horizontal plane, and means carried by saidcross beam to automatically reverse said lever at the end of eachmovement of said piston.

' 2. In a motor of the character described, a cylinder, a piston in saidcylinder, two valves controlling the supply and exhaust, anintermediately pivoted lever mounted to move in a vertical plane andhaving its ends operatively connected to said valves, a pivoted crossbeam mounted to swing in a hor1- zontal plane, means carried by saidcross beam to automatically reverse said lever at the end of eachmovement of said piston and to lock said lever during each movement ofsaid piston.

3. In a motor of the character described, a cylinder, a piston in saidcylinder, two valves controlling the supply and exhaust, anintermediately pivoted lever having its ends operatively connected tosaid valves, a pivoted cross beam, means carried by said cross beam toautomatically reverse said lever at the end of each movement of saidpiston, and a segment on said cross beam provided with a ledge adaptedto alternately engage the top and bottom of an extension. of said leverwhereby the latter is locked during each movement of said cross beam.

4. In a motor of the character described, a cylinder, a piston in saidcylinder, two valves controlling the supply and exhaust, anintermediately pivoted lever having its ends operatively connected tosaid valves, a pivoted cross beam, a spring pressed stud carried by saidcross beam and bearing upon said lever, and means to actuate said crossbeam in accordance with the movement of said piston whereby said stud isalternately brought into engagement with said lever at each side of itspivot.

5. In a motor of the character described, a cylinder, a piston in saidcylinder, two valves controlling the supply and exhaust, anintermediately pivoted lever having its ends operatively connected tosaid valves, a pivoted cross beam, a spring pressed stud carried by saidcross beam and bearing upon said lever, a cross head on the piston rodand a connecting rod from said cross head to said cross beam whereby thelatter is actuated to alternately bring said stud into engagement withsaid lever at each side of its pivot.

6. In a motor of the character described, a cylinder, a piston in saidcylinder, two valves controlling the supply and exhaust, anintermediately pivoted lever having its ends operatively connected tosaid valves, a pivoted cross beam, a spring pressed stud carried by saidcross beam and bearing upon said lever, means to actuate said cross beamin accordance with the movement of said piston whereby said stud isalternately brought into engagement with said lever at each side of itspivot and said lever is automatically reversed, and a segment on saidcross beam provided with a ledge adapted to alternately engage the topand bottom of an extension of said lever whereby the latter is lockedduring each movement of said cross beam.

7 In a motor of the character described, a casting containing acylinder, a piston in said cylinder, said casting having two valve waystherein, inlet and outlet passages and upper and lower chambers havingports leading to opposite ends of said cylinder, valves in said valveways and means to operate said valves to alternately feed and exhaustthrough each of said chambers.

8. In a motor of the character described, a casting having twincylinders, pistons in said cylinders, said casting having two valve waystherein, inlet and outlet passages and upper and lower chambersextending between said cylinders and having ports leading to oppositeends thereof, valves in said valve ways and means to operate said valvesto alternately feed and exhaust through each of said chambers.

9. In a motor of the character described, a casting containing acylinder, a piston in said cylinder, said casting having two valve waystherein, upper and lower chambers having ports leading to opposite endsof said cylinder, an inlet passage arranged between said chambers at oneend, an outlet passage similarly arranged at the other end of saidcasting, valves arranged in said valve ways, each valve having acircumferential groove adapted to comprehend said inlet or outletpassage and one of said chambers, and means to operate said valves toalternately feed and exhaust through each of said chambers.

10. In a motor of the character described, a casting having twincylinders, pistons in said cylinders, said casting having two valve waystherein, upper and lower chambers extending between said cylinders andhaving ports leading to opposite ends thereof, an inlet passage arrangedbetween said chambers at one end, an outlet passage similarly arrangedat the other end of said casting, valves arranged in said valve ways,each yalve having a circumferential groove adapted to comprehend saidinlet or outlet passage and one of said chambers, and means to operatesaid valves to alternately feed and exhaust through each of saidchambers.

11. In a motor of the character described, a casting containing acylinder, a piston in said cylinder, said casting having two valve waystherein, inlet and outlet passages and upper and lower chambers havingports leading to opposite ends of said cylinder, valves in said valveways, an intermediately pivoted lever having its ends operativelyconnected to said valves, means to automatically reverse said lever atthe end of each movement of said piston whereby said valves are adaptedto alternately control the supply and exhaust through said chambers, andmeans to lock said lever in position during each movement of saidpiston.

In testimony whereof, I aflix my signature, in presence of twowitnesses.

ANTON E. WVEINGARTNER. Vitnesses:

WALTER S. BROWN, FRITHIOF LUNDAHL.

